package com.sky.Aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Component
@Aspect
@Slf4j
/*
*
* 自定义切面类，实现公共字段自动赋值
* */
public class AspectAutoFill {
    @Pointcut("execution( * com.sky.mapper.*.*(..))&&@annotation(com.sky.annotation.AutoFill)")
    public void autofillpointcut() {}
@Before("autofillpointcut()")
    public void autofill(JoinPoint joinPoint) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        log.info("公共字段自动赋值...");
//获得操作类型，即标明注解方法的value值
    MethodSignature signature = (MethodSignature)joinPoint.getSignature();
    AutoFill autofil = signature.getMethod().getAnnotation(AutoFill.class);
    OperationType operationType = autofil.value();

    Object[] args = joinPoint.getArgs();
    if (args==null||args.length==0)return;

    Object entity = args[0];
    LocalDateTime now = LocalDateTime.now();
    Long currentId = BaseContext.getCurrentId();

   


    if (operationType==OperationType.INSERT){
        Method setCreatTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
        Method setUpdateTime= entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
        Method setCreateUser  = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
        Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

        setCreatTime.invoke(entity,now);
        setUpdateTime.invoke(entity,now);
        setUpdateUser.invoke(entity,currentId);
        setCreateUser.invoke(entity,currentId);
    }
    else if (operationType==OperationType.UPDATE){

        Method setUpdateTime= entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
        Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
        setUpdateTime.invoke(entity,now);
        setUpdateUser.invoke(entity,currentId);

    }


}




}
